All Questions

580

+22

what is Br e- config beginning with closest noble gas?

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helloxx May 12, 2021

601

+22

what is ca+ electon config beginning with closest noble gas?

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helloxx May 12, 2021

513

HELP PLEASE

Show that (n−1 r−1) +( n−1 r ) = (n r)
this is combinations
I would apperatice your help :D

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Guest May 12, 2021

615

Probability

There are 17 boys and 15 girls in a Math 30 class. The teacher is selecting 7 students to represent the school on the student advisory council.
Determine the probability, to the nearest hundredth of a percentage, that at most 2 boys will be selected. read more ..

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Guest May 12, 2021

1010

A radio transmission tower is 150 feet tall. How long should a guy wire be if

A radio transmission tower is 150 feet tall. How long should a guy wire be if it is to be attached 5 feet from
the top and is to make an angle of 20° with the ground?
a. 159.6 ft
c. 154.3 ft
b. 424.0 ft
d. 438.6 ft
<read more ..

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Guest May 12, 2021

628

solve the equation on the interval 0 ≤ θ < 2π

solve the equation on the interval 0 ≤ θ < 2π

sin^(2)(2θ )=1

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Guest May 12, 2021

510

help

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Guest May 12, 2021

689

Write the trigonometric expression as an algebraic expression in u.

Write the trigonometric expression as an algebraic expression in u.

sec (sin-1 u)

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Guest May 12, 2021

523

ITS URGENT!!!

https://web2.0calc.com/questions/seek-for-answer-thanks-a-lot

the answer is not b

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Guest May 12, 2021

692

+84

HELP ME!!

A ship is sailing east. At one point, the bearing of a submerged rock is
48°20′. After the ship has sailed 14.2 mi, the bearing of the rock has become
308°40′. Find the distance of the ship from the rock at the later point.
read more ..

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ughh.abby May 12, 2021

614

HELP!!! I need this ASAP it's due today!

Two lines, A and B, are represented by the equations given below:
Line A: x + y = 6
Line B: x + y = 4
Which statement is true about the solution to the set of equations?

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Guest May 12, 2021

532

HELP!! Please I need this ASAP it's due today!

Two lines, C and D, are represented by the equations given below:
Line C: y = x + 10
Line D: y = 3x + 2
Which of the following shows the solution to the system of equations and explains why?

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Guest May 12, 2021

528

Probability

Two cards are drawn without replacement from a standard deck of 52 cards. Determine the probability that neither card is black.

Thank you for the help!

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Guest May 12, 2021

474

Train Math Problem

The back of a 400-meter long train traveling at 60 kilometers per hour exits a tunnel exactly 3 minutes after the nose of the train enters the tunnel. How long is the tunnel?

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Guest May 12, 2021

557

algebra

What is the constant term of the expansion of (6x + 1/(3x))^8?

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Guest May 12, 2021

868

+201

How many non-congruent triangles with perimeter $15$ inches are there whose side lengths are all integer numbers of inches?

How many non-congruent triangles with perimeter 15 inches are there whose side lengths are all integer numbers of inches?

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mathisopandcool May 12, 2021

519

help

ElectricPavlov ●

Guest May 12, 2021

577

Need help

You are choosing between two different cell phone plans. The first plan charges a rate of 26 cents per minute. The second plan charges a monthly fee of $29.95 plus 11 cents per minute. How many minutes would you have to use in a month in order read more ..

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Guest May 12, 2021

642

Dkskks

How do I type a exact fraction not like 1/2

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Guest May 12, 2021

478

Pls help

There are some coloured rubber bands in a box. 3/8 of them are blue, 1/4 of them are re and 5/6 of the remainder are yellow. There are 20 yellow rubber bands. Find the total number of rubber bands in the box.

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Guest May 12, 2021

591

Help needed

I'm a bit confused about this one
Three people, Bob, Anne, and Liz have applied for the same job and one of them will get the job. Based on experience, Bob has a 30% chance of getting the job and Anne has a 38% chance of getting the job.
read more ..

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Guest May 12, 2021

610

+137

A difficult inequality!

Let $a,$ $b,$ and $c$ be positive real numbers such that $a > b$ and $a + b + c = 4.$

Find the minimum value of $4a + 3b + \frac{c^3}{(a - b)b}.$ read more ..

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HighSchoolDx May 12, 2021

608

+102

Vertex

I've heard that in the quadratic form of , is the vertex of the parabola. Can somebody explain why that works? Thanks!

AnxiousLlama

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AnxiousLlama May 12, 2021

513

+12

Help

There are some apple-flavoured and lemon-flavoured sweets in a jar. If 75 apple-flavoured sweets are removed from the jar, the total number of sweets left with be 6 times the number of apple-flavoured sweets left. If 60 lemon-flavoured sweets are remove read more ..

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TTVTrash49 May 12, 2021

All Questions ⁺⁰238332 Questions

what is Br e- config beginning with closest noble gas?

what is ca+ electon config beginning with closest noble gas?

HELP PLEASE

Probability

A radio transmission tower is 150 feet tall. How long should a guy wire be if

solve the equation on the interval 0 ≤ θ < 2π

help

Write the trigonometric expression as an algebraic expression in u.

ITS URGENT!!!

HELP ME!!

HELP!!! I need this ASAP it's due today!

HELP!! Please I need this ASAP it's due today!

Probability

Train Math Problem

algebra

How many non-congruent triangles with perimeter $15$ inches are there whose side lengths are all integer numbers of inches?

help

Need help

Dkskks

Pls help

Help needed

A difficult inequality!

Vertex

Help

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